2 edition of Discharge characteristics of embankment-shaped weirs found in the catalog.
Discharge characteristics of embankment-shaped weirs
Carl E. Kindsvater
|Statement||by Carl E. Kindsvater.|
|Series||Geological Survey water-supply paper -- 1617-A, Studies of flow of water over weirs and dams|
|The Physical Object|
|Pagination||v, 114 p. :|
|Number of Pages||114|
In a nozzle or other constriction, the discharge coefficient (also known as coefficient of discharge or efflux coefficient) is the ratio of the actual discharge to the theoretical discharge, i.e., the ratio of the mass flow rate at the discharge end of the nozzle to that of an ideal nozzle which expands an identical working fluid from the same initial conditions to the same exit pressures. Full Equations Utilities (FEQUTL) Model for the Approximation of Hydraulic Characteristics of Open Channels and Control Structures During Unsteady Flow.
The book provides a fundamental understanding of the theory of labyrinth weirs and continues with detailed sections on significant factors that affect the discharge characteristics of labyrinth weirs, such as crest shape, weir height, and sidewall angle. Palde, U.J., Hydraulic Laboratory Studies of a 4-Foot-Wide Weir Box Turnout Structure for Irrigation Use, Report REC-ERC, Bureau of Reclamation, Denver, Colorado, September Shen, J.A., "Preliminary Report on the Discharge Characteristics of Trapezoidal-Notch Thin-Plate Weirs," U.S. Geological Survey, July
Skew weirs are used for reducing afflux while passing a certain discharge. Herein, the discharge characteristics of a sharp-crested skew weir are explored. The concept of elementary discharge coefficient is utilized for predicting the discharge. Based on experimentation, an equation for the discharge coefficient of skew weirs is determined as a function of weir head to weir height and the weir. /books books Thomas Telford Publishing /hdosw Hydraulic design of side weirs Hydraulic design of side weirs R. W. P. May, B. C. Bromwich, Y. Gasowski, and C. E. Rickard The Institution of Civil Engineers, Great George Street, London SW1P 3AA Thomas Telford Publishing Queen's Printer, Controller of Her Majesty's Stationary Office, HR Wallingford .
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Additional Physical Format: Online version: Kindsvater, Carl E. (Carl Edward), Discharge characteristics of embankment-shaped weirs.
Washington, D.C.: U.S.G.P.O. DISCHARGE OVER EMBANKMENT-SHAPED WEIRS A3 the results of the previous investigations, Sigurdsson made additional tests on a scale model. The purpose of his tests was to explore more critically the boundary-layer influence on free-flow discharge characteristics.
Subsequently, from totwo more laboratory studies of theCited by: Get this from a library. Discharge characteristics of embankment-shaped weirs. [Carl E Kindsvater; Georgia Institute of Technology.; Geological Survey (U.S.),]. Discharge characteristics of broad-crested weirs defined by laboratory tests are described.
Broadcrested weirs are classified as short, normal, or long according to the form of the water-surface profile over the weir. The discharge equation is obtained by dimensional analysis, and the coefficient of discharge is related to dimensionless ratios that describe the geometry of the channel and the.
Using the flow equation for the broad-crested weir with parallel flow in the critical state as the basis, we have defined the discharge coefficient C d, with the head on the weir as the length scale.
Based on an extensive analysis of the experimental observations in the literature, we have confirmed the classification of finite crest length Cited by: Six weir-gate models were experimentally tested to study the discharge characteristics of flow over weirs of finite crest length and under gate.
The interaction factors were correlated with the geometry parameters for all weir-gate models with an average coefficient of determination of Determine the maximum discharge over a broad-crested weir 60 meters long having m height of water above its crest.
Take coefficient of discharge as Also determine the new discharge over the weir, considering the velocity of approach. The channel at the upstream side of the weir has a cross-sectional area of 45 sq meters.
Rao and Shukla experimentally determined the effect of the finite crest length on discharge characteristics of broad-crested weirs with square and elliptical upstream corners.
Bos, M.G. () presented necessary head-discharge equations for broad-crested weirs and long-throated flumes of various cross sections in the control section. Experiment #9: Flow Over Weirs 1. Introduction. A weir is a barrier across the width of a river or stream that alters the characteristics of the flow and usually results in a change in the height of the water level.
Several types of weirs are designed for application in natural channels and laboratory flumes. literature and presents a comprehensive analysis of the discharge characteristics of triangular-notch weirs. Previously published data are analyzed in the light of the effective-head concept, and a new discharge formula is proposed.
Coefficients are recom mended and requirements for precise measurements are described. Hence measurement of discharge varies as per change in the flow characteristics due to change in the geometry of weir for a given flume.
Based on experimental analysis, past researchers have shown that discharge coefficient (C d) changes proportionally with h/L ratio, maintaining an average range of C d for various h/L values. Weirs are structures consisting of an obstruction such as a dam or bulkhead placed across the open channel with a specially shaped opening or notch.
The flow rate over a weir is a function of the head on the weir. Common weir constructions are the rectangular weir, the triangular or v-notch weir, and the broad-crested weir.
Download PDF: Sorry, we are unable to provide the full text but you may find it at the following location(s): (external link). The coefficient of discharge obtained is: for v-notch and for rectangular weir. Thus, rectangular weir has higher discharge than the triangular weir.
Discover the world's research. The rectangular weir (notch) is a common device used to regulate and measure discharge in irrigation projects.
The current research was. An embankment-shaped weir is an embankment overtopped by flood waters. Among the engineering problems frequently resulting from. this occurrence is the need to compute the peak discharge from postflood yield observations. The research described in this.
report was concerned with the theoretical and experimental bases for the computation procedure. CHE - Lab Report Solteq Flow Over Weirs FM26 (). HYDRAULICS OF EMBANKMENT WEIRS By Hermann M. Fritzi and Willi H. Hager,z Fellow, ASCE Embankment weirs, often found in engineering applications with a side slope 1V:2H, are considered in this paper.
For free overflow, the discharge coefficient is determined in terms of relative crest length for long broad-crested, broad-crested, short-crested. Flow over embankment-shaped weirs as well as weirs of other shapes is computed in the FEQUTL command EMBANKQ (section ).
The computations follow the principles developed and outlined in Hulsing (, p. The principles described in Hulsing are based on research reported by Kindsvater (). The procedure applied in FEQUTL divides. The rectangular weir is the most commonly used thin plate weir.
Weirs are typically installed in open channels such as streams to determine discharge (flowrate). The basic principle is that discharge is directly related to the water depth (h) in the figure above; h is known as the "head.".
Keywords: Discharge, Head, Open channel, Velocity, Weirs. I. INTRODUCTION HE purpose of this study is to present an analysis on effect of types of weir on discharge. A weir is an obstruction in open channel in which water must flow over and is used indirectly to obtain flow rate based on the weir geometry and the head on the weir crest .Discharge characteristics of broad-crested weirs / by: Tracy, H.
J. Published: () Mazes and labyrinths; their history and development, by: Matthews, William Henry, Published: ().Discharge Characteristics Of Rectangular Thin-Plate Weirs. Solution proposed for discharge characteristics, based on simple equation of discharge and experimentally derived coefficients which account for influence of fluid properties and physical characteristics of weir and weir channel; effects of viscosity and surface tension are related to increase in effective head and increase or decrease.